MCP25025-E/SL Microchip Technology, MCP25025-E/SL Datasheet - Page 34

• Manufacturer Part Number: MCP25025-E/SL
• Description: CAN I/O Expander Family, -40C to +125C, 14-SOIC 150mil, TUBE
• Manufacturer: Microchip Technology

MCP2502X/5X
REGISTER 5-6:
DS21664D-page 34
bit 7
bit 6
bit 5-4
bit 3
bit 2
bit 1-0
OPTREG1 REGISTER
GPPU: Weak pull-up enabled
1 = Weak pull-ups disabled
0 = Weak pull-ups enabled (GP7:GP0)
CLKEN:
1 = Clock Out Function disabled
0 = Clock Out Function enabled
CLKPS1:CLKPS0: CLKOUT Prescaler bits
00 = F
01 = F
10 = F
11 = F
Reserved:
CMREQ: Requests mode of operation (allows mode changes via the CAN bus)
1 = Requests Listen-only mode
0 = Requests Normal mode *
* CMREQ must be cleared as default to avoid device entering Listen-only mode on first “Input”
AQT1:AQT0: Analog Acquisition Time bits
00 = 64T
01 = 2
10 = 4
11 = 8
(e.g., AQT1:AQT0 => 00 => 2.56 µs for a 25 MHz F
Legend:
R = Readable bit
- n = Value at POR
bit 7
message.
R/W-1
GPPU
•
•
•
OSC
OSC
OSC
OSC
(64T
(64T
(64T
OSC
/1
/2
/4
/8
OSC
OSC
OSC
CLKEN
R/W-1
)
)
)
CLKPS1
R/W-1
W = Writable bit
‘1’ = Bit is set
CLKPS0
R/W-1
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U-0
OSC
—
)
CMREQ
R/W-0
© 2007 Microchip Technology Inc.
x = Bit is unknown
R/W-0
AQT1
R/W-0
AQT0
bit 0